Immunogen sequence: DVHVTIGDIK TGAPQYGSYG TAPVNLNIKT GGRVYGTTGT KVKGVDLDAP GSINGVPLLE VDLDSFEDKP WRKPGADLSD YFNYGFNEDT WK. FIP1L1 is a component of the cleavage and polyadenylation specificity factor (CPSF) complex that plays a key role in pre-mRNA 3'-en